How high should a FM antenna BE?

How high should a FM antenna BE?

FCC Rules assume a height of 30 feet for the receiving antenna. This is a figure originally taken from the height of an average two-story house with an outdoor antenna. Soil conductivity and vegetation can have considerable effect on FM reception.

At what height should install an antenna for a better signal?

In general, the higher you place your antenna, the better. It would be best to have your antenna placed 30 feet above ground level to give you the clearest over-the-air connection with a tower. For those looking for that height, outdoor antennas are usually a good place to start.

Will FM antenna work with HDTV?

Most digital television transmissions (including HDTV broadcasts) are in the UHF band (300 MHz to 3,000 MHz). So if your antenna is designed for UHF/HDTV frequencies only, then it will not receive the FM broadcasts very well.

What is the height of antenna used for TV transmission?

A T.V transmitting Antenna is 128 m tall. If the receiving Antenna is at the ground level, the maximum distance between them for satisfactory communication in L.O.S. mode is: [Radius of the earth =6.

Where should I place my FM antenna?

Contrary to popular belief, placing your radio’s rod-type antenna vertically usually does NOT improve FM reception. FM signals mostly travel horizontally, so, positioning the antenna rod or wire horizontally or diagonally will usually give better results than vertically.

How can I make my FM antenna stronger?

How to Fix Poor FM Radio Reception

1. Remove any obstacles you can.
2. Check and replace antenna connections.
3. Run a frequency scan.
4. Switch from stereo to mono.
5. Move your antenna: If you have an indoor antenna, place it near a window as high as possible to avoid interference from materials used in wall construction.

Can an FM antenna work for TV?

As you can see the whole FM band is between VHF channels 6-7. That’s why an FM antenna can’t do all the TV channels.

Can I use a UHF antenna for FM radio?

Most UHF antennas will actually do a decent job of FM reception as well. UHF antennas don’t pick up the FM band by design, but they don’t block it either. It’s just that FM radio doesn’t require a very complex antenna for reception. In general, most antennas you’ll find for sale today are UHF/VHF antennas.

What is the formula for height of antenna?

Base-station antenna height (h1) = 30.48 m (100 ft) Base-station power at the antenna = 10 watts (40 dBm) Base-station antenna gain Gt = 6 dB above dipole gain (6 dBd) Mobile-unit antenna height = 3 m (10 ft) ro = 1.6 km (or 1 mi)

How can I increase FM signal strength?

How tall does an antenna have to be to be effective?

At a height of a half wavelength, the radiated energy is strongest at a rather high elevation angle of 30º. This would represent the situation for a 14-MHz dipole 35 feet off the ground. As the horizontal antenna is raised to greater heights, additional lobes are formed, and the lower ones move closer to the horizon.

How does the height of an FM transmitter antenna affect the horizon?

FM transmissions in the VHF band (e.g. 107.7 MHz) are essentially line-of-sight. This means that the radius of your broadcast is basically as far as the horizon – maybe a little beyond, but not by much. The height of your antenna affects the distance to the horizon, according to the formula

When was antenna height above average terrain developed?

When the concept of antenna height above average terrain was developed for VHF and UHF radio and television in the late 1930s and 1940s, the process for determining HAAT was a manual one.

How is the HAAT of an antenna determined?

Using GLOBE, HAAT values can be calculated for any location on Earth, given coordinates and an antenna radiation center height above mean sea level (usually correlating to the physical center of the antenna). More about HAAT below the form. How is the HAAT determined?